65 lines
2 KiB
PHP
65 lines
2 KiB
PHP
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<?php
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namespace FOQ\ElasticaBundle\Transformer;
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/**
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* Holds a collection of transformers for an index wide transformation.
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*
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* @author Tim Nagel <tim@nagel.com.au>
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*/
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class ElasticaToModelTransformerCollection implements ElasticaToModelTransformerInterface
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{
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protected $transformers = array();
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protected $options = array(
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'identifier' => 'id'
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);
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public function __construct(array $transformers, array $options)
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{
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$this->transformers = $transformers;
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$this->options = array_merge($this->options, $options);
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}
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public function getObjectClass()
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{
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return array_map(function ($transformer) {
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return $transformer->getObjectClass();
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}, $this->transformers);
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}
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public function transform(array $elasticaObjects)
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{
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$sorted = array();
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$order = array();
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foreach ($elasticaObjects as $object) {
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$sorted[$object->getType()][] = $object;
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$order[] = sprintf('%s-%s', $object->getType(), $object->getId());
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}
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$transformed = array();
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foreach ($sorted AS $type => $objects) {
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$transformed = array_merge($transformed, $this->transformers[$type]->transform($objects));
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}
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$positions = array_flip($order);
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$identifierGetter = 'get' . ucfirst($this->options['identifier']);
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$classMap = $this->getTypeToClassMap();
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usort($transformed, function($a, $b) use ($positions, $identifierGetter, $classMap)
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{
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$aType = array_search(get_class($a), $classMap);
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$bType = array_search(get_class($b), $classMap);
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return $positions["{$aType}-{$a->$identifierGetter()}"] > $positions["{$bType}-{$b->$identifierGetter()}"];
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});
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return $transformed;
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}
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protected function getTypeToClassMap()
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{
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return array_map(function ($transformer) {
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return $transformer->getObjectClass();
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}, $this->transformers);
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}
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}
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